B- The Moh's Hardness Scale is 0-10 starting with talc and ending with diamonds that ranks the hardness of minerals. A minerals hardness can be determined by if it scratches another mineral, it is harder, and if it is scratched, it is softer.
Answer:
Heat lost would be 606.375J
Explanation:
Mass = 63.0g
T1 = 48°C
T2 = 23°C
Specific heat capacity of copper (c) = 0.385J/g°C
Q = Mc∇T
Q = Mc(T₂ - T₁)
Q = 63 * 0.385 * (23 - 48)
Q = 24.255 * -25
Q = -606.375J
The heat lost would be 606.375J
Answer:
C2H4
Explanation:
The image attached shows a detailed solution of the above problem. The empirical formula shows the ratio of the atoms of each element present.
Answer:
B
Explanation:
Spontaneous in chemical reactions means without any external input.
